Terminal-modified imide oligomer and solution composition of the same
US4963645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1988 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Aug 24, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/122
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A terminal-modified imide oligomer having an unsaturated group as a terminal group and an imide bond inside of the oligomer which is produced by reacting 2,3,3',4'-or 3,3',4,4'-biphenyltetracarboxylic acid or its derivative, a diamine compound, and an unsaturated dicarboxylic acid or its derivative and/or an unsaturated monoamine in an organic solvent is disclosed. This oligomer has a logarithmic viscosity of not more than 1.0. This logarithmic viscosity is measured under the conditions of concentration of 0.5 g/100 ml-solvent (N-methyl-2-pyrrolidone) and a temperature of 30.degree. C., and has a melting point of 50.degree. to 300.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.